Related Experiment Video
Updated: Jul 18, 2026

08:18
A Model of Chronic Nutrient Infusion in the Rat
Published on: August 14, 2013
Chromium deficiency during total parenteral nutrition
JAMA
|February 2, 1979
Summary
Severe glucose intolerance and encephalopathy in a patient on long-term parenteral nutrition were reversed with chromium supplementation. This suggests chromium deficiency can occur with total parenteral nutrition.
Area of Science:
- Endocrinology
- Nutritional Science
- Metabolic Disorders
Background:
- Chromium is essential for maintaining normal glucose tolerance.
- Long-term total parenteral nutrition (TPN) can alter nutrient metabolism.
- Nutrient deficiencies can manifest with severe clinical symptoms.
Observation:
- A patient with a history of complete bowel resection developed severe glucose intolerance, weight loss, and metabolic encephalopathy after five months of TPN.
- The patient's serum chromium levels were at the lowest normal range.
- Clinical symptoms improved significantly with daily chromium supplementation.
Findings:
- Chromium deficiency can develop in patients receiving long-term total parenteral nutrition.
- Chromium supplementation effectively reversed glucose intolerance and encephalopathy.
- Supplementation led to weight gain and reduced insulin requirements.
Implications:
- Patients on long-term TPN should be monitored for potential chromium deficiency.
- Chromium supplementation may be a crucial intervention for TPN-associated metabolic disturbances.
- This case highlights the importance of trace element management in long-term nutritional support.
Related Concept Videos
Vitamins
Vitamins, derived from the Latin word for life, are essential organic substances required in small quantities for optimal growth and overall well-being. Unlike other organic nutrients, vitamins don't act as sources of energy or building materials but rather facilitate these nutrients' utilization by the body. Vitamins are predominantly coenzymes, assisting enzymes in specific chemical actions, like the oxidation of glucose for energy involving B vitamins. Most vitamins are not produced in our...
Mineral, Vitamin and Water Absorption
Electrolytes are essential minerals and ions primarily obtained from the diet and absorbed through the gastrointestinal tract. Most electrolytes are absorbed in the small intestine. While the absorption of iron and calcium primarily occurs in the duodenum, calcium is also absorbed in the jejunum and ileum. In these regions, passive diffusion contributes to its absorption alongside active transport mechanisms in the duodenum. These ions can exit the enterocytes through specialized active...
Enteral Nutrition I: Orogastric and Nasogastric Feeding
Enteral nutrition delivers nutrients directly to the stomach or small intestine through a tube. This method is appropriate for patients who cannot eat but still have a functioning digestive system. It is also beneficial for individuals with swallowing difficulties, anorexia, malabsorption, or those who have undergone gastrointestinal (GI) surgery.
Orogastric (OG) and nasogastric (NG) feeding are two standard methods used for enteral nutrition. Enteral nutrition is often preferred over...
Orogastric (OG) and nasogastric (NG) feeding are two standard methods used for enteral nutrition. Enteral nutrition is often preferred over...
Parentral Nutrition: Centeral and Peripheral Parental Nutrition
Parenteral Nutrition (PN) delivers essential nutrients directly into the bloodstream, bypassing the digestive system. It is commonly used for individuals with severe digestive disorders or conditions that prevent normal nutrient absorption.
PN can be administered through two primary routes:
1. Central Parenteral Nutrition (CPN):
CPN involves delivering a high concentration of nutrients through a large vein. This is typically achieved using a Peripherally Inserted Central Catheter (PICC) or,...
PN can be administered through two primary routes:
1. Central Parenteral Nutrition (CPN):
CPN involves delivering a high concentration of nutrients through a large vein. This is typically achieved using a Peripherally Inserted Central Catheter (PICC) or,...
Absorption of Nutrients
Absorption refers to taking dietary nutrients from the intestinal lumen for transportation throughout the body. After digestion in the small intestine, carbohydrates, proteins, and fats are broken down into simpler forms. These essential macronutrients and other vital substances, such as vitamins, minerals, and water, are then prepared for absorption into the bloodstream.
Enterocytes, which are specialized polar epithelial cells, line the mucosa of the small intestinal walls. These cells...
Enterocytes, which are specialized polar epithelial cells, line the mucosa of the small intestinal walls. These cells...
Chronic Kidney Disease III: Interprofessional Care
Chronic kidney disease (CKD) requires collaborative and comprehensive management. CKD progresses through stages and can lead to end-stage kidney disease (ESKD) if untreated. Interprofessional collaboration and patient education are crucial, enabling patients to manage their health and improve their quality of life.Diagnostic approach for chronic kidney diseaseThe diagnosis of CKD primarily focuses on the glomerular filtration rate (GFR), which assesses kidney function by measuring how well...

